650Rider, xs650 hosted by XS650.com

What Happened to 650rider.com?

650 Rider went offline for about a month at the beginning of 2010. In order to save the technical information that was here, XS650.com acquired the site and brought it back online as a read-only archive. If you were a member of 650 Rider, you will need to re-register at XS650.com

     [x] 650Rider Menu
 Community Search Information


xs650 > > Motorcycle Systems > > Fuel > > Carb Question

SearchSearch


Carb Question
    Forum Index -> Fuel
View previous topic :: View next topic  
Author Message
batman911
Full Member
Full Member


Joined: Jan 13, 2009
Posts: 60
Location: 1979 xs400

PostPosted: February 4, 2009, 9:35 am    Post subject: Carb Question

Ok guys... I pulled the carbs apart yesterday to clean all the gunk out of them and came across something very interesting... When I pulled the piston/diaphragms off i realized that they were 2 completely different types... Is this normal? Im pretty sure it isn't but just thought I'd ask.
Back to top
oldskoolcool
Full Member
Full Member


Joined: Sep 08, 2007
Posts: 372

PostPosted: February 4, 2009, 9:44 am    Post subject: Re: Carb Question

nope.
Back to top
yamaman
Support Staff
Support Staff


Joined: Jan 04, 2007
Posts: 1638
Location: Perth Western Australia

PostPosted: February 4, 2009, 11:20 am    Post subject: Re: Carb Question

Interesting way to overcome the diferences between the 2 cylinders!
Will be interesting to know all about this one!
Please let us know, or post some pics would be better, once you work out what you've got and what side it's on! Carb & main & pilot jet sizes would be great. Also how did it run before?

Also pics or discription of your spark plugs would be good!

Carb identitfier here might help:

www.mikesxs.net/XS_Mod..._Chart.pdf

_________________
Its not enough to have an aim in life, you have to pull the trigger!
Back to top
Photo Gallery
batman911
Full Member
Full Member


Joined: Jan 13, 2009
Posts: 60
Location: 1979 xs400

PostPosted: February 4, 2009, 12:47 pm    Post subject: Re: Carb Question

Well the bike is a 79 xs400. It hadn't ran in a year or so I was told from the guy who sold it to me. I put some fresh gas and a good battery in it sunday and it started up on the 4th kick with the choke on. It was running like crap and I couldn't take the choke off or it would die. The carbs were all gummed up. I will take some pics tonight and post them up.
Back to top
batman911
Full Member
Full Member


Joined: Jan 13, 2009
Posts: 60
Location: 1979 xs400

PostPosted: February 4, 2009, 9:57 pm    Post subject: Re: Carb Question

OK Here are some pics sorry they are blurry but my camera wouldn't focus down the inside of the piston.


This is one. It has the needle and seat on top of it.


This is the other one. From what I can tell,it has a spring around the needle under the needle clip, then the seat which has a stem coming off the top of the seat, and a circle clip to hold it all in place. That is what i think is in this one. I don't know because I haven't been able to get the circle clip out yet.


This is all that came out of the first one.
Back to top
jayel
650Rider Supporter
650Rider Supporter


Joined: Apr 16, 2006
Posts: 3417
Location: SE Iowa 1974 TX650A

PostPosted: February 4, 2009, 10:48 pm    Post subject: Re: Carb Question

here's a blow-up of your carb see if the parts match up

www.cmsnl.com/yamaha-x.../C-01.html

_________________
all it takes is time and money -- Where are we going and why are we in this hand basket?
Back to top
Photo Gallery
batman911
Full Member
Full Member


Joined: Jan 13, 2009
Posts: 60
Location: 1979 xs400

PostPosted: February 5, 2009, 1:55 am    Post subject: Re: Carb Question

Well, that matches one perfectly... The other one not so much
_________________
1979 xs400
Back to top
jinxed13
New Member
New Member


Joined: Nov 20, 2009
Posts: 2

PostPosted: December 12, 2009, 6:31 pm    Post subject: Re: Carb Question

the odd carb is also a mikuni bs34. its just off of a xs360. i have both sets and neither is great.
Back to top
Display posts from previous:   
Printer Friendly Page     Forum Index -> Fuel All times are GMT - 5 Hours
Page 1 of 1


Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


   

Check out the new Honda CB750 Forum at CB750.com! A site dedicated to the great Honda SOHC and DOHC CB750.

Check out the new Yamaha XS400 Forum at XS400.com!

Yamaha xs650

xs650, xs, 650, forum, links, chopper, custom, yamaha, parts, forum, info, information, bb, bulletin board, XS650
650Rider, Free Unrestricted xs650 forum, Personal photo albums, Post images in Forum, News columns, Daily blog, Links, Event calendar, Information for Yamaha XS650



Interactive software released under GNU GPL, Code Credits, Privacy Policy